Metal-face-plate brush



Patented 0st. 17, 1922.

' l/Vl/EIVTORS 771 722 7% M. P. BENSON AND M. M. WIENER.

METAL FACE PLATE BRUSH.

APPLICATION FILED FEB. 1, 1922.

Patented @ct. 17, 1922.

UNHTEH) MATTHEW P. BENSON, 0F TROY, AND IVIILTON M. "\JVIENEE, OF NEVVYORK, N. Y.

IIIETAL-FACE-PLATE BRUSH.

Application filed February 1, 1922.

To aZZ whom it may, concern:

Be it known that we, MATTHEW P. BEN- soN and MILTON M. vVmNnn, bothcitizens of the United States, residing, respectively. at Troy, in thecounty of liensselaer, and New York, in the county of New York, both inthe State of New York, have invented certain new and useful Improvementsin Metal-Face-Plate Brushes, of which the following is a specification.

This invention relates to the manufacture of toilet brushes or the likeand has particular reference to the manner of construction andattachment of a face plate of metal or other analogous material.

Among the objects of the invention is to provide a brush the back ofwhich is of the most sanitary construction and one which possesses theneatest possible appearance as well as being as nearly water proof asany com osite article may be.

ore specifically stated the invention comprises a novel form andconstruction of face plate, the same having features bearing both uponthe appearance of the finished brush and improved locking means forsecuring the same in place in connection with the back.

With the foregoing and other objects in view the invention consists inthe arrang ment and combination of parts hereinafter described andclaimed, and while the inven tion is not restricted to the exact detailsof construction disclosed or suggested herein, still for the purpose ofillustrating a practical embodiment thereof reference is had to theaccompanying drawings, in which like reference characters designate thesame parts in the several views, and in which Figure 1 is a plan view ofthe face portion of a brush, parts being broken away.

Fig. 2 is an enlarged cross sectional detail on the line 22 of Fig. 1.

Fig. 3 is a fragment of the face plate projected from Fig. 2.

Referring now more specifically to the drawings, 10 indicates a brushmade ordinarily of,wood or the like and so shaped as by routing on theface thereof to provide a cavity 11, the periphery of the cavity beingunder-cut as shown at 12.

The face plate above referred to is shown at 13 and may be understood asbeing formed from a single piece of sheet metal Serial No. 533,324.

in the convex portion of which are formed a multiplicity of holes 14 inwhich a corresponding number of groups or bundles of bristles 15 arefixed in any suitable manner, the head ends of the bristles projectingfrom the face plate into about the mid portion of the cavity. Theformation of the face plate includes a flange 16 projecting into theperipheral portion of the cavity 11 to about the bottom thereof andperpendicular to said bottom or the general plane of the face plate,irrespective of the form the bottom of the cavity may be made to assume.In other words, the flange 16 extending around the face plate forms withthe undercut 12 an annular space 17 of substantially brush backs. Inother words, as hereto-fore practised the periphery of the cavity Willoftentimes show a roughness or unevenness along the extreme edge of theface plate, which condition renders the brush, so made up, at best asecond and one which lacks neatness of appearance as well as beinglikely to accumulate dust or dirt and so become unsanitary and mostunsightly. In this improvement, the exposed surface portion of the plate13 overlaps the adjacent edge of the undercut back as indicated at 18,for the formation of which the metal or stock from which the plate isformed is bent or crimped sharply upon itself, and then finally thefiange is projected inward from the doubled overlapping portion and sois fitted into the cavity directly past said adjacent edge of theunder-cut portion. The

overlapping double portion of the face plate thus serves to obscure anypossible roughness or unevenness incident to the formation or routing ofthe cavity in the back 10. Moreover, this exposed edge of the faceplate, being rounded due to the folding upon itself,

' loosening of the face plate.

produces an unusually pleasing finish for this part of the completedbrush. It follows therefore that no Water or other extraneous matter canpossibly get into the joint between the edges of the plate and the back.

Any suitable means may be provided to secure the face plate in theposition indicated in the cavity. To this end it is best to introduceforcibly into the cavity a plastic substance 19 which on becoming hardserves to lock the parts together male ing a substantially solid brushbody. The idea of introducing this plastic material being well knownneed not be further described here. i

The flange 16 is shown provided with a row of holes 20 of any suitableform or size which if remote from the extreme edge of the flange will.not materially weaken the same. The plastic material when forced intothe cavity will likewise be projected outward into and through the holes20, giving added holding power to the plastic material when it becomeshard. Each portion of material projecting into one of the holes servesas a holding spur to prevent the This function is augmented by theformation of the undercut space 17 into which a portion of the materialpassing through the holes 20 may be forced. Obviously any plasticmaterial which occupies the under-cut space upon becoming hard will actas a wedge and so additionally lock the flange 16 in place.

We claim:

1. In combination, awooden brush back having a routed cavity bounded bya rim, a face plate of sheet material having a straight flange projectedinto-the peripheral portion of the cavity and having a ribbed portionprojecting outward and overlapping the joint between said flange and,the rim portion aforesaid of the back and means to lock the face platein place, substantially as set forth. I l

2. A device as set forth in claim 1 in which the overlapping portion ofthe face plate is formed by crimping the material of the plate sharplyupon itself forming a smooth rounded finishing portion for the exposededge thereof in the finished brush.

3. The combination with a brush back having an under-cut rim portionforming a cavity, of a metal face plate having a flange projecting intothe periphery of the cavity perpendicular to the general plane of theface plate and leaving an annular space'incident to said under-cut whilethe outer surface of the flange substantially meets the adjacent edgeportion of the back rim, bristles projecting through said plate, theplate flange being perforated, and means projected through the faceplate flange perforations to lock the same in place.

4. The combination with a brush back having a cavity, of a metal faceplate having a flange projecting into the periphery of the cavity, saidface plate being perforated, bristles extending from the cavityaforesaid through said perforations and a body of plastic materialserving to lock the bristle ends within the cavity and the face plateflange in the periphery of the cavity, a portion of the plastic materialacting between the outer surface of the flange and the adjacent wall ofthe cavity.

5. A brush as set forth in claim a in which the face plate flange isperforated and portions of the plastic material project radially throughsaid perforations.

In testimony whereof we affix our signatures.

MATTHEW P. BENSON. MILTON M. WIENER.

